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for i | for i do commands; done | ||
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Revision as of 23:55, 29 February 2016
External
Internal
Overview
The for built-in command expand words, and execute commands once for each member in the resultant list, with i bound to the current member.
for i in words; do commands; done
Alternatively, for:
for i do commands; done
commands executes for each positional parameter (as if in "$@" had been specified.
Yes another alternative form:
for (( i=0; i<${#names[@]}; i++ )); do local name=${names[${i}]} echo "${name}" done
!!!Iterating through $1, $2, $3 ...
{{{
for i do echo ${i} done
}}}
!!!Iterating through a space separated list
{{{
s="a b c"
for i in ${s} do echo ${i} done
}}}
or
{{{
s="a b c"
for i in ${s}; do echo ${i}; done
}}}
Note the use of ";"
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